Chair control mechanism



FIG. 1 is an underside perspective view of a chair control mechanism illustrating my design,

FIG. 2 is a right side view thereof,

FIG. 3 is a back view thereof,

FIG. 4 is left side view thereof,

FIG. 5 is a front view thereof; and,

FIG. 6 is a bottom view thereof.

The portions of the figures shown in dashed lines do not form part of the design. 

The ornamental design of a chair control mechanism, as shown and described. 